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Aesthetic medicine · London

Fat-dissolving injections, honestly done.

Licensed Aqualyx in CQC-regulated aesthetic clinics for small, pinchable fat pockets - double chin, jowls, small flanks, bra fat, inner thighs. Not a weight-loss injection, not a liposuction substitute. A good clinic explains this before you book.

A stethoscope on a clinical desk

Indicative pricing

What Aqualyx costs in London.

Indicative per-session ranges at London aesthetic clinics. Most patients need 2 to 4 sessions to reach the endpoint.

In short

Per session: £350–£750. Full course: £750–£2,400 over 2 to 4 sessions.

Area Indicative range
Submental (double chin) - per session £350–£600
Jowls or jawline - per session £400–£650
Bra fat or small flanks - per session £450–£750
Inner thighs or knees - per session £500–£750
Small abdomen pocket - per session £500–£750
Typical full course (2–4 sessions) £750–£2,400

Prices vary by clinic, by lead injector and by the number of vials required.

When it helps

The pockets it clears - and the ones it will not.

The classic indications, plus the things fat-dissolving is often wrongly asked to fix.

  • Small submental fat pad (double chin)

    A discrete pinchable pocket under the chin in a patient with reasonable skin tone. The classic indication.

  • Early jowls

    A small subcutaneous fat component contributing to the jowl. Not a substitute for a lower-face lift where laxity dominates.

  • Small flanks or bra-fat rolls

    Localised pinchable rolls that will not shift with training. Aqualyx works well in small volumes; larger flanks are a VASER conversation.

  • Inner thigh or knee fat pads

    Small, stubborn, hormonally driven pads that respond well to a fanned grid technique over 2 to 3 sessions.

  • A small abdomen pocket

    A pinchable pouch below the umbilicus in an otherwise slim abdomen. Not for a soft or diastasis-driven belly.

  • Not for weight loss or obesity

    Fat-dissolving is a contouring tool for small localised pockets. It will not treat generalised weight, visceral fat, or BMI above the healthy range.

  • Not for skin laxity or muscle bulk

    Loose skin needs energy-based tightening or surgery. A prominent masseter needs Botox. Platysmal banding needs neuromodulator or surgery.

  • Warning: grey-market vials

    If a product is not Aqualyx (or, in the US, Kybella / Belkyra) and the injector will not show you the vial, walk out. Unlicensed compounded phosphatidylcholine has caused severe reactions.

Products and technique

Aqualyx, Kybella, and the technique behind them.

The molecule is a detergent that lyses the fat-cell membrane. The released fat is then cleared by an inflammatory response over 4 to 6 weeks.

  • Aqualyx (phosphatidylcholine + sodium deoxycholate)

    A CE-marked medical device licensed for use in the UK. The workhorse fat-dissolving injectable in London clinics. Detergent action lyses adipocyte membranes; the released fat is cleared by an inflammatory response.

  • Kybella / Belkyra (deoxycholic acid)

    FDA-approved in the US for submental fat only. NOT licensed in the UK - if a UK clinic offers Kybella it is being used off-licence or is not the genuine product. UK use is not advised.

  • Grid injection technique

    The area is marked in a 1cm grid. Small aliquots are injected subcutaneously at each point using a fanning technique. Depth matters: too superficial risks skin ulceration, too deep risks nerve or vessel injury.

  • When it is not suitable

    Non-pinchable fat, submandibular gland pseudo-fat, platysmal banding, significant skin laxity, active infection, pregnancy or breastfeeding, autoimmune disease, coagulopathy, or unrealistic expectations.

What to look for

CQC-regulated clinics, licensed product.

A good aesthetic clinic has lead injectors who treat these areas regularly and uses only licensed Aqualyx.

  • CQC-registered London clinics using licensed Aqualyx only, never unbranded phosphatidylcholine

  • Injectors trained specifically in Aqualyx grid technique and submental anatomy

  • Full consent covering swelling, bruising, nodules and marginal mandibular nerve risk

  • Onward pathways to VASER, CoolSculpting or EmSculpt Neo where a needle is not the right answer

Safety and recovery

What to expect - honestly.

Aqualyx is well tolerated in trained hands, but the downtime is real and worth planning for. Swelling and firm nodules are normal, not complications.

  • Significant swelling for 5 to 14 days

    Expect the area to look worse before it looks better. Facial areas swell dramatically for 3 to 5 days; body areas remain firm and tender for up to 2 weeks. Plan your diary.

  • Bruising and tenderness

    Multiple injection points mean bruising is common. Arnica and paracetamol help. Avoid ibuprofen for 48 hours and alcohol for 24 hours.

  • Firm subcutaneous nodules

    Palpable, sometimes tender lumps at 2 to 4 weeks as the inflammatory response peaks. They settle over 4 to 8 weeks. Daily massage helps.

  • Marginal mandibular nerve weakness (rare)

    Transient asymmetry of the lower-lip smile after submental treatment, from local anaesthetic or oedema pressure on the nerve. Almost always resolves within weeks.

  • Asymmetry and incomplete response

    Not every area clears evenly. Touch-up injections at 6 weeks are common. A small proportion of patients get little response and should not keep repeating sessions.

  • Skin ulceration - if injected too superficially

    A serious complication of poor technique. One of the reasons a trained injector, and a licensed product, matter.

  • Granuloma and infection

    Rare firm inflammatory reactions or bacterial infection at injection sites. Reported more with unbranded compounded product than with licensed Aqualyx.

  • Not a liposuction alternative

    Aqualyx handles small volumes only. If you want a full flank, full abdomen or clear muscle definition, VASER hi-def or surgical liposuction is the right conversation.

  • Weight stability is essential

    Fat cells destroyed by Aqualyx do not return, but remaining cells can enlarge with weight gain. Results last as long as your weight is stable.

What good paperwork looks like

Four things your clinic should give you in writing.

If any of these are missing at consultation, walk out. This is what separates a licensed CQC-regulated clinic from a back-room injector.

  1. 01 Assessment

    Pinch depth and diagnosis of the bulge

    The injector should tell you the pinch fat thickness in millimetres, and confirm the bulge is subcutaneous fat rather than gland, muscle or laxity.

  2. 02 Plan

    Number of sessions and total volume

    A written plan with number of sessions, indicative volume of Aqualyx per session, interval between sessions and expected downtime.

  3. 03 Consent

    Named risks including nerve and ulceration

    Written consent naming swelling, bruising, nodules, asymmetry, marginal mandibular nerve weakness and ulceration - and an aftercare contact.

  4. 04 Follow-up

    Photographs at 6 weeks and endpoint

    Standardised photographs at baseline, 6 weeks after each session and at endpoint. This is how you and the injector agree the course is finished.

Trusted London providers

Cadogan ClinicEF MEDISPACranley ClinicDr Wassim TaktoukWaterhouse YoungYoung LDNCadogan ClinicEF MEDISPACranley ClinicDr Wassim TaktoukWaterhouse YoungYoung LDNCadogan ClinicEF MEDISPACranley ClinicDr Wassim TaktoukWaterhouse YoungYoung LDN

Aesthetic treatments are not covered by UK private medical insurance. Clinics are paid directly per session.

Frequently asked

Common questions about Aqualyx.

Quick answers on sessions, swelling, permanence and the Aqualyx vs Kybella question.

  • Can fat-dissolving injections be used for weight loss?

    No. Aqualyx is a contouring tool for small, pinchable, subcutaneous fat pockets. It will not treat generalised weight, visceral (belly-deep) fat, or a BMI above the healthy range. If weight loss is your goal, medical weight-management pathways such as GLP-1 therapy are the relevant route rather than injectables.

  • How many sessions of Aqualyx will I need?

    Most areas need 2 to 4 sessions, spaced 4 to 6 weeks apart. A small submental double chin often clears in 2 sessions. Flanks, thighs and abdomen usually need 3 to 4. Your injector will agree a written plan at consultation and re-photograph you at 6 weeks after each session.

  • How bad is the swelling and how long does it last?

    Expect significant swelling, bruising and tenderness for 5 to 14 days. Facial areas swell dramatically for the first 3 to 5 days, then settle. Body areas remain firm and lumpy for up to 2 weeks. Firm nodules under the skin can persist for 4 to 6 weeks as the inflammatory response resolves.

  • Will insurance cover fat-dissolving injections?

    No. Aqualyx and other fat-dissolving injectables are aesthetic treatments and are not covered by UK private medical insurance. You pay the clinic directly per session.

  • Are the results permanent?

    The fat cells destroyed by Aqualyx do not grow back. However, the fat cells that remain in the area can enlarge if you gain weight, which will change the contour. Results are long-lasting provided your weight stays stable.

  • What is the difference between Aqualyx and Kybella?

    Aqualyx is a CE-marked medical device licensed for injection lipolysis in the UK, based on phosphatidylcholine and sodium deoxycholate. Kybella (Belkyra outside the US) is a deoxycholic acid product FDA-approved in the US for submental fat only, and is NOT licensed in the UK. If a UK clinic offers you Kybella, it is being used off-licence or is not the genuine product.

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